Julie and the Phantoms
A band made up of a living frontwoman (Mariana Lessa [Brazil]/Madison Reyes [US]) and the ghosts of an older band (Sunset Curve). Their story is the focus of Julie and the Phantoms, a 2020 Netflix adaptation of Julie e os Fantasmas, a 2011-2012 Brazilian musical comedy/drama. The Phantoms can only be seen by the audience when they are performing with Julie and usually appear on stage out of thin air once their contributions to a song begins. This magic is explained as simply a hologram effect created and programed by Julie. Although it does seem to be implied that the hologram band is an actual band performing elsewhere.